Results 11 to 20 of about 875 (170)
Hydration of Portland-Pozzolanic Cements
Transactions of the Indian Ceramic Society, 1982 Portland-pozzolanic cements were prepared by gradual replacement of Portland cement by pozzolana. Calcined common clay and china clay were used as two different pozzolanas. Sulphated Portland-pozzolanic cements were prepared by incorporating gypsum. Hydration values were measured on curing these cements separately in water and in 5% MgSO4, solution. On
E.S. Newman, L.S. Wells
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Durability of Glass Fiber Reinforced Cement (GRC) Containing a High Proportion of Pozzolans
Applied Sciences, 2022 Glass fiber reinforced cement (GRC) is an excellent composite for architects and engineers because it can be molded to produce laminar panels or to create complicated designs.
Luis Felipe Lalinde +4 more
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Assessment of pozzolanic material for manufacturing of Portland Pozzolana cement (PPC) by the comparison of Ordinary Portland cement (OPC) [PDF]
Acta Geodynamica et Geomaterialia, 2022 In the present study physicochemical characterization of slate sample was carried out which was collected from slate mine in Lasbela District, Baluchistan. Slate was evaluated for its effectiveness as partial replacement of ordinary Portland cement (OPC) in the production of Portland Pozzolana cement (PPC).
Adnan Khan +2 more
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Clays for Low-Carbon Cements: Overview, Progress, and Challenges. [PDF]
Glob ChallThis review provides a critical overview of recent developments of activated clays to function as artificial pozzolans. After a thorough description of the clays that yield good pozzolanic performances, selected examples are given on thermal and mechanical activations. Chiefly, general correlations are extracted from reported data despite its scattered
Koufany I +4 more
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Effect of Chemical Additives on Carbon Dioxide in the Sustainable Production of Portland Pozzolanic Cement [PDF]
محیط زیست و مهندسی آبThis research aims to investigate the reduction of CO2 emissions in the cement production process by producing pozzolanic portland cement (PPC) with the characteristics of ordinary portland cement (OPC) using quality-improving chemical additives ...
Aliakbar Derakhshani +2 more
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Evaluation of metakaolin pozzolan for cement in South Africa
Developments in the Built Environment, 2023 This paper presents findings of an experimental study conducted to evaluate the performance of metakaolin (MK) for potential use as a supplementary cementitious material or cement extender in South Africa. In this study, various proportions consisting of
F. Sinngu +3 more
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Physical, mechanical and microscopic characterization of cold bonded fly ash lightweight aggregates
Materiales de Construccion, 2002 This study presents the results of the different tests carried out on fly ash lightweight aggregates produced with three different kinds of binders: Lime, Portland cement and Pozzolan Portland cement.
C. Videla, P. Martínez
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Case Studies in Construction Materials, 2023 This study aims to assess the effect of using some chemical admixtures including Calcium nitrate tetrahydrate (CN) and Calcium formate (CF), Triethanolamine (TEA), and Triisopropanolamine (TIPA) on the early-age compressive strength of Portland cement ...
Aliakbar Derakhshani +2 more
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Thermally Activated Bentonite As a Supplementary Cementitious Material – A Review [PDF]
Engineering and Technology Journal, 2021 Bentonite is a mixture of clay and non-clay minerals. Montmorillonite clay mineral is a dominant mineral in bentonite. Silica and alumina bond in the crystal structure of montmorillonite. Therefore, they cannot contribute to the pozzolanic reaction. Heat
Amer A. Al-Hammood +2 more
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Natural pozzolans-like Bahariya basalts used as alternative raw materials for cement clinker Portland [PDF]
Delta Journal of Science, 2021 Mid-Tertiary volcanism in the Western Desert Egypt was associated with the opening of the Red Sea, a period of 30 Ma. Basalts are composed of plagioclase, pyroxene, and olivine minerals.
Ahmed M. Abdullah +3 more
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